Statement Of Comprehensive Income [Abstract]
| Concept |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
54,100,000
GBP
|
288,400,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
200,000
GBP
|
–
GBP
|
234,500,000
GBP
|
–
GBP
|
–
GBP
|
234,300,000
GBP
|
–
GBP
|
200,000
GBP
|
–
GBP
|
–
GBP
|
244,400,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
244,200,000
GBP
|
247,900,000
GBP
|
3,700,000
GBP
|
–
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||||||||
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||||||||
| Cash flow hedges [abstract] | ||||||||||||||||||||||||
| Other comprehensive income, before tax, cash flow hedges | — | — | — | — | — | — | — | — | — | — | — |
1,300,000
GBP
|
— | — | — | — | — | — | — | — |
1,500,000
GBP
|
— | — | — |
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — | — | — | — | — | — | — | — | — | — | — |
1,200,000
GBP
|
— | — | — | — | — | — | — | — |
9,600,000
GBP
|
— | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||||||||||||||||
| Income tax relating to cash flow hedges included in other comprehensive income | — | — | — | — | — | — | — | — | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — | — |
400,000
GBP
|
— | — | — |
| Other comprehensive income |
–
GBP
|
— | — |
–
GBP
|
45,200,000
GBP
|
–
GBP
|
100,000
GBP
|
–
GBP
|
7,600,000
GBP
|
1,000,000
GBP
|
6,100,000
GBP
|
44,600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
43,900,000
GBP
|
32,000,000
GBP
|
1,700,000
GBP
|
–
GBP
|
1,100,000
GBP
|
73,100,000
GBP
|
— | — |
–
GBP
|
| Comprehensive income |
–
GBP
|
— | — |
–
GBP
|
45,200,000
GBP
|
–
GBP
|
300,000
GBP
|
–
GBP
|
226,900,000
GBP
|
1,000,000
GBP
|
6,100,000
GBP
|
278,900,000
GBP
|
–
GBP
|
200,000
GBP
|
–
GBP
|
43,900,000
GBP
|
276,400,000
GBP
|
1,700,000
GBP
|
–
GBP
|
1,100,000
GBP
|
317,300,000
GBP
|
— | — |
–
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — | — | — | — | — |
279,200,000
GBP
|
— | — | — | — | — | — | — | — |
317,500,000
GBP
|
— | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — | — | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — | — |
0
GBP
|
— | — | — |